////
//// Created by admin on 2021/12/22.
////
//
//#include <iostream>
//
//using namespace std;
//
//int main() {
//
//    cout << "Hello World!";
//    cout << "";
//    cout << "\nCC\toptions\tFile.[cC]\n";
//    cout << "a really,really long string literal "
//            "that spans two lines" << endl;
//    cout << "M" << " " << '\115' << " " << '\x4d' << endl;
//
//    unsigned long long bigVal = -1ULL;
//    cout << bigVal << endl;
//    return 0;
//}